package com.zxs.util;

import lombok.Data;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;

@Data
public class R<T> implements Serializable
{
//    private Integer code;
//    private String message;
//    private Map<String,Object> data = new HashMap<>();
//
//    //1. 成功时的方法
//    public static R ok(){
//        R r = new R();
//        r.setCode(200);
//        r.setMessage("操作成功！");
//        return r;
//    }
//    //2. 失败时的调用方法
//    public static R error(){
//        R r = new R();
//        r.setCode(500);
//        r.setMessage("操作失败！");
//        return r;
//    }
//
//    // 4. 修改出错信息
//    public R message(String message){
//        this.setMessage(message);
//        return this;
//    }
//    // 5. 修改错误码
//    public R code(Integer code){
//        this.setCode(code);
//        return this;
//    }
//    //4. 设置添加数据
//    public R data(String key, Object value){
//        this.data.put(key,value);
//        return this;
//    }
//    public R data(Map<String,Object> map){
//        this.setData(map);
//        return this;
//    }
    private static final long serialVersionUID = 1L;

    /** 成功 */
    public static final int SUCCESS = 200;

    /** 失败 */
    public static final int FAIL = 500;

    private int code;

    private String msg;

    private T data;

    public static <T> R<T> ok()
    {
        return restResult(null, SUCCESS, null);
    }

    public static <T> R<T> ok(T data)
    {
        return restResult(data, SUCCESS, null);
    }

    public static <T> R<T> ok(T data, String msg)
    {
        return restResult(data, SUCCESS, msg);
    }

    public static <T> R<T> fail()
    {
        return restResult(null, FAIL, null);
    }

    public static <T> R<T> fail(String msg)
    {
        return restResult(null, FAIL, msg);
    }

    public static <T> R<T> fail(T data)
    {
        return restResult(data, FAIL, null);
    }

    public static <T> R<T> fail(T data, String msg)
    {
        return restResult(data, FAIL, msg);
    }

    public static <T> R<T> fail(int code, String msg)
    {
        return restResult(null, code, msg);
    }

    private static <T> R<T> restResult(T data, int code, String msg)
    {
        R<T> apiResult = new R<>();
        apiResult.setCode(code);
        apiResult.setData(data);
        apiResult.setMsg(msg);
        return apiResult;
    }

    public int getCode()
    {
        return code;
    }

    public void setCode(int code)
    {
        this.code = code;
    }

    public String getMsg()
    {
        return msg;
    }

    public void setMsg(String msg)
    {
        this.msg = msg;
    }

    public T getData()
    {
        return data;
    }

    public void setData(T data)
    {
        this.data = data;
    }

    public static <T> Boolean isError(R<T> ret)
    {
        return !isSuccess(ret);
    }

    public static <T> Boolean isSuccess(R<T> ret)
    {
        return R.SUCCESS == ret.getCode();
    }
}
